Slag pocket wall



June 21, 1966 J. v. SALMI SLAG POCKET WALL 2 Sheets-Sheet 1 ?lE- l..

Filed July 2, 1963 /A/VENTOR. JOHN l SALM/ Aftarney June 21, 1966 J. v. SALMI 3,256,665

SLAG POCKET WALL A Mor/lay United States Patent O 3,256,665 SLAG POCKET WALL John V. Salmi, Morrisville, Pa., assignor to United States Steel Corporation, a Corporation of Delaware Filed July 2, 1963, Ser. No. 292355 7 claims. (Cl. 52-479) This invention relates to a wall for the slag pocket of a steel prod ucing open hearth furnace and particularly to such a wall made up of fireclay bricks at the cold face and basic brick at the hot face. The slag pockets provide passageways between the checker chambers and the uptakes of the furnace and during furnace operation slag and dust accumulate therein. At the end of the furnace campaign and sometimes midway of the furnace campaign, the Wall adjacent .the pouring aisle must be removed and the slag pocket cleaned out. The usual arrangement of the wall has an outer section of fireclay brick which gives structural rigidity interlocking with the heat resisting wall of basic brick. A series of steel plates extending the entire thickness of the wall tie the basic brick to the fireclay brick and to vertical supports. With this arrangement the basic-brick, the fireclay bricks and the plates must be removed and completely replaced when the wall is rebuilt. This is an expensive and time consuming operation.

It is therefore an object of my invention to provide a slag pocket wall in which the basic bricks may be replaced without replacing the fireclay bricks.

This and other objects will be more apparent after referrng to the following specification and attached drawings, in which:

FIGURE 1 is a schematic vertical sectional view through the slag pocket;

FIGURE 2 is an enlarged view taken on the line II- II of FIGURE 1;

FIGURE 3 is a view taken on the line III-III of FIG- URE 2; and

FIGURE 4 is a view taken on the line IV-IV of FIGURE 3.

Referring more particularly to the drawings, reference numer-al 2 indicates a slag pocket having side walls 4 each of which has a hot face 6 and a cold face 8. A plurality of spaced apart vertical steel members 1@ are arranged at the cold face 8. A T is shown, but it will be understood that any member having a flange arranged generally parallel to the cold face may be used. A plurality of horizontal steel plates 12 are spaced apart vertically of the wall preferably at every six courses of 3 in. thick bricks. Each of the plates 12 has a pair of notches 14 therein at the end adjacent the cold face for receiving one of the flanges of the T as shown in FIGURE 2.

.In some cases an angle may be used in place of the T's.

When this is done only part of the plates 12 will be' anchored to the vertical members 10. An opening 16 is provided in the plate 12 on the side adjacent the hot face. A replaceable steel plate 18 with a tab 20 thereon has a downwardly extending flange 22 there-on which is received in the opening 16 of the associated plate 12. A wall of fireclay brick provides structural support or rigidity and a 9 in. wall 26 of basic brick at the hot face provides heat protection. It is preferred to provide a layer of insulation 27 at the cold face.

The wall is laid up from the bottom in the usual manner. However, the 9 in. X 4 /2 in. X 3 in. fireclay bricks 24a immediately below each plate 12 at the opening 16 are cut away at 28 to provide clearance for the flange 22. The fireclay brick directly above the plates 12 and 18 at the tab 20 is cut into two sections 2 th and 24c and the section 246 is reduced to 2 /2 in. in thickness as compared to the 3 in. thickness for the other bricks. It

Patented June 21, 1966 will be understood that bricks of the desired size may be used instead of cutting down standard bricks. I have also found it advantageous to provide a row of basic bricks 30 midway between the spaced apart plates 12 and 18. This aids in tying the walls 24 and 26 together.

I have found that it is only necessary to replace the basic bricks 26 when the wall is rebuilt. This is done by removing the basic bricks 26 and 30, the fireclay bricks 240, and any part of the plates 18 that remain. As the basic brick wall 26 is built upwardly the bricks 26 and 30 are laid up as before and the plates 18 placed in position :as the wall moves upwardly. The brick sections 24c are slipped into position above the plates 18 and the wall built up until the next plate 12 is reac'hed after which a new plate 18 is placed in position with its fiange 22 in .the hole 16 of the associated plate 12. This continues until the entire wall has been built.

While one embodiment of my invention has been shown and described it will be apparent .that other adaptations and nodications may be made without departing from the scope of the following claims.

I claim:

1. A combination 'wall for the slag pocket of an open hearth furnace, said wall having a cold face and a hot face, comprising a wall of firebrick adjacent said cold face, a wall of basic brick adjacent said hot face in contact with said firebrick wall, a plurality of horizontal plates spaced apart vertically in said firebrick wall, each of said plates having an opening therethrough at the end adjacent said wall of basic brick, a plurality of flanged plates spaced apart vertically in said basic brick wall one associated with each of said first named plates, each flanged plate having a tab extending over the associated plate, and a flange on said tab extending downwardly into said opening of the associated plate.

2. A combination wall according to claim 1 in which a basic brick extends from said basic brick wall into said firebrick 'wall between said horizontal plates.

3. A combination wall according to claim 1 in which a fireclay brick is positioned loosely above each of said tabs.

4. A combination wall for the slag pocket of an open hearth furnace, said wall having a cold face and a hot face, comprising spaced apart vertical members arranged at 'the cold face with a flange thereon extending generally parallel to the cold face, a wall of firebrick adjacent said cold face, a Wall of basic brick adjacent said hot face in contact with said firebrick wall, a plurality of horizontal plates spaced apart vertically in said firebrick wall, at least a number of said plates having a pair of notches therein at the end adjacent the cold face for receiving one of the said anges, each of said plates having an opening therethrough at the end adjacent said wall of basic brick, a plurality of horizontal flanged plates spaced apart vertically in said basic brick wall one associated with each of, said first named plates, each flanged plate having a tab extending over the associated plate, and a ange on said tab extending downwardly into said opening of the associated plate.

5. A combination wall according ;to claim 4 in which a basic brick extends from said basic brick wall into said firebrick wall between said horizontal plates.

6. A combination wall according to claim 4 in which a fireclay brick is positioned loosely above each of said tabs.

'7. A combination wall according to claim 5 in which a fireclay brick is positioned loosely above each of said tabs.

No references cited.

FRANK L. ABBOTT, Prmary Exam'ner.

A. C. PERHAM, Assistant Exam'ner. 

4. A COMBINATION WALL FOR THE SLAG POCKET OF AN OPEN HEART FURNACE, SAID WALL HAVING A COLD FACE AND A HOT FACE, COMPRISING SPACED APART VERTICAL MEMBERS ARRANGED AT THE COLD FACE WITH A FLANGE THEREON EXTENDING GENERALLY PARALLEL TO THE COLD FACE, A WALL OF FIREBRICK ADJACENT SAID COLD FACE, A WALL OF BASIC BRICK ADJACENT SAID HOT FACE IN CONTACT WITH SAID FIREBRICK WALL, A PLURALITY OF HORIZONTAL PLATES SPACED APART VERTICALLY IN SAID FIREBRICK WALL, AT LEAST A NUMBER OF SAID PLATES HAVING A PAIR OF NOTCHES THEREIN AT THE END ADJACENT THE COLD FACE FOR RECEIVING ONE OF THE SAID FLANGES, EACH OF SAID PLATES HAVING AN OPENING THERETHROUGH AT THE END ADJACENT SAID WALL OF BASIC BRICK, A PLURALITY OF HORIZONTAL FLANGED PLATES SPACED APART VERTICALLY IN SAID BASIC BRICK WALL ONE ASSOCIATED WITH EACH OF SAID FIRST NAMED PLATES, EACH FLANGED PLATE HAVING A TAB EXTENDING OVER THE ASSOCIATED PLATE, AND A FLANGE ON SAID TAB EXTENDING DOWNWARDLY INTO SAID OPENING OF THE ASSOCIATED PLATE. 